If we have rename()d more than 5 files from new/ to cur/, rescan the directory again to make sure we didn't skip any files.
If we have rename()d more than 5 files from new/ to cur/, rescan the
directory again to make sure we didn't skip any files.

--HG--
branch : HEAD

dscho/dovecot,jkerihuel/dovecot,dscho/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,dscho/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jwm/dovecot-notmuch,dscho/dovecot,jkerihuel/dovecot,jkerihuel/dovecot,jkerihuel/dovecot,jkerihuel/dovecot,dscho/dovecot